85. You should say "I am sorry " when you knock ________ somebody.
When my father and I traveled to Shanghai, he asked me to take a picture of him ______ stands the famous Oriental Pearl TV Tower.
If he ____ the book before, Jack would be able to tell us something about the story now.
----What's your ____ towards working on the weekends?----I am strongly against it.
The industry is to the national economy. It is expected to account for 38.4% of our country's GDP by 2015.
----Helen, what did our headmaster say just now?----Every boy and girl, as well as the teachers who ______ to lead the group, _______ asked to come to school before 9:00 tomorrow.